Perhaps you should try some spelling variations:
hien xanh » hien hanh, hien nhanh, chieu xanh
thang cua » thong cua, hang cua, than cua
dung cong » dung trong
hang cong » dang cong, hang nong, bang cong
tang cua » mang cua, hang cua, tang luan
van than » van thanh, van thang, van tuan
than ban » thanh ban, toan ban, than man

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien xanh - hanh ((thang cua) or (tang cua)) ((dung cong) or (hang cong)) van than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh ((thang cua) OR (tang cua)) ((dung cong) OR (hang cong)) van than ban.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh ((thang cua) or (tang cua)) ((dung cong) or (hang cong)) van than ban*.